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| author | Claudiu Beznea <claudiu.beznea@microchip.com> | 2020-08-05 11:36:48 +0300 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2020-08-17 11:18:17 +0200 |
| commit | e70bfc2fa8fe1a95a522f9d1ccf24d3d9b81366a (patch) | |
| tree | 6c90226556b522a2fd60e2ab4d5b682157de1c49 /arch/arm/mach-at91/pm.c | |
| parent | 9123e3a74ec7b934a4a099e98af6a61c2f80bbf5 (diff) | |
| download | lwn-e70bfc2fa8fe1a95a522f9d1ccf24d3d9b81366a.tar.gz lwn-e70bfc2fa8fe1a95a522f9d1ccf24d3d9b81366a.zip | |
ARM: at91: pm: add support for ULP0 fast wakeup
ULP0 fast improves suspend/resume time with few milliseconds the drawback
being the power consumption. The mean values measured for suspend/resume
time are as follows (measured on SAMA5D2 Xplained board), ULP0 compared
with fast ULP0:
- ulp0 fast: suspend time: 169 ms, resume time: 216 ms
- ulp0 : suspend time: 197 ms, resume time: 258 ms
Current consumption while suspended (measured on SAMA5D2 Xplained board):
- ulp0 fast: 730uA
- ulp0 : 270uA
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/1596616610-15460-2-git-send-email-claudiu.beznea@microchip.com
Diffstat (limited to 'arch/arm/mach-at91/pm.c')
| -rw-r--r-- | arch/arm/mach-at91/pm.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c index 2aab043441e8..a6336af1f449 100644 --- a/arch/arm/mach-at91/pm.c +++ b/arch/arm/mach-at91/pm.c @@ -51,10 +51,11 @@ static struct at91_soc_pm soc_pm = { }; static const match_table_t pm_modes __initconst = { - { AT91_PM_STANDBY, "standby" }, - { AT91_PM_ULP0, "ulp0" }, - { AT91_PM_ULP1, "ulp1" }, - { AT91_PM_BACKUP, "backup" }, + { AT91_PM_STANDBY, "standby" }, + { AT91_PM_ULP0, "ulp0" }, + { AT91_PM_ULP0_FAST, "ulp0-fast" }, + { AT91_PM_ULP1, "ulp1" }, + { AT91_PM_BACKUP, "backup" }, { -1, NULL }, }; |